This article discusses how monetary and fiscal policies are implemented and how they influence GDP and price level. It also explores whether fiscal policy will remain the key policy instrument in the UK during a crisis. The article provides an overview of the tools used in monetary and fiscal policies and their impact on the economy. It also discusses the advantages and disadvantages of these policies and their impact on inflation and economic growth. The subject of the article is global macroeconomic policies and it does not mention any specific course code, course name, or college/university.